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Vojnotehnički glasnik
2014, vol. 62, iss. 4, pp. 38-50
article language: Russian
document type: Original Scientific Paper
doi:10.5937/vojtehg62-5369


Force of the air pressure on a moving plate
Državni viši koledž za vojno vazduhoplovstvo u Minsku, Republika Belorusija

e-mail: gretchihin@yandex.ru

Abstract

This paper developed a mathematical model of gas dynamic fluid flow for a flat plate during its movement with positive and negative angles of attack. It is shown that at low velocities, the lifting force and the frontal resistance are determined by gasdynamic air flow in the fluid flow exit areawhile at velocities close to the speed of sound the decisive role is played by a mutualeffect of the pplate coliding with molecules of the surrounding environment in the fluid flow incidence field. The airflow behind the plate does not appear at low velocities. The conditions when the frontal resistance and the lifting force change the sign are determined.

Keywords

gasdynamic plate; molecular-kinetic theory; force constants

References

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